Improvement in machines for cutting and threading pipe



J. B. EATON & 0. LATHAM. Machine for Cutting and Threading Pipe.

No. 206,095- Patented July 16. I878.

I; "I J- I 5L i D.- L 7;

UNITED STATES PATENT OEEIoE.

JOSEPH B. EATON AND CHARLES LATHAM, OF SHAMOKIN, PENNSYLVANIA; SAIDEATON ASSIGNOR TO SAID LATHAM.

IMPROVEMENT IN MACHINES FOR CUTTING AND THREADING PIPE.

Specification forming part of Letters Patent No. 206,095, dated July 16,1879; application filed April 2, 1878.

To all whom "it may concern:

Be it known that we, J osEPH B. EATON and CHARLES LATHAM, of Sharnokin,in the county of North um her] and and State of Pennsylvania, haveinvented a new and Improved Machine for Cutting and Threading Pipe, ofwhich the following is a specification:

Figure l is a plan view, partly in section, of our improved pipe cuttingand threading machine. Fig. 2 is an end elevation, partly in section.Fig. 3 is a transverse section taken on line as :r in Fig. 1. Fig. 4 isa transverse section taken on line y y in Fig. 1.

Similar letters of reference indicate corresponding parts.

Our invention relates to machines for cutting and threading metal pipes.

Referring to the drawing, A is a sleeve, which is dividedlongitudinally, and provided with hinges B, and with lugs a bdiametrically opposite the hinges. To the lug a is pivoted a yoke, c,which is provided with a thumbscrew, d, and is capable of swinging overand clamping the lug b. Upon each end of the sleeve there is a rim, 6,on the periphery of which there are teeth f, which are engagedby pawls lm in the forked handle h. The handle has two arms, 1', upon the ends ofwhich there are guides j, having curved slots k, for receiving the rimse. The guides j are recessed to receive the oppositely-arranged pawls lm, and upon the arms t there are movable collars at, each having acam-lug, 0, which is capable of engaging the pawls, so as to throweither of them out of engagement with the teeth on the rims e. A squarerecess, p, is formed in the sleeve A for receiving the screw-cutting dieq. A pipe-guide, 1", having a flange, s, is fittedto the sleeve A, andis provided with a lug-pin, t, which is fitted to a notch in the sleeveand prevents the guide from turning. A short sleeve, 21, having anexternal thread of the same lead as the thread it is desired to cut onthe pipe, is screwed into the outer end of the guide, and is providedwith a pointed setscrew, V, which clamps the pipe firmly in the sleeve.Between the guide 4 and the die q there is a cutter, to, which moves ina recess, a, formed in the side of the sleeve A, andhas formed in it aT-shaped notch for receiving the end of the screw 1), which passesthrough a threaded boss on the side of the sleeve. Opposite the recess athere is an aperture, 0, for the discharge of chips.

The sleeve A is readily clasped around a pipe when it is to be cut, andthe cutter is forced into the metal as the sleeveA is revolved by meansof the handle and pawls. The thread is cut by slipping the guide overthe pipe and clamping said pipe in the sleeve u by means of the screw1;. The sleeve A is then rotated by means of the handle and ratchet-suntil the thread is formed. The guide 1 and sleeve A are led forward bythe thread on the sleeve to. After the thread is cut the die is removedfrom the pipe by turning the sleeve in the opposite direction afterhaving reversed the pawls by turning the cam-collars it.

Having thus described our invention, we claim as new and desire tosecure by Letters Patent- The forked handle h, having the pawls Z m, andcollars n, in combination with the dieholding sleeve A, having theratchet-rims e, substantially as shown and described.

JOSEPH B. EATON. CHARLES LATHAM. Witnesses:

W. H. GILGER, JOHN HANCOCK

